Glass-etching machine.



E. BELL.

GLASS ETCHING MACHINE.

APPLIOATION FILED 1320.23, 1912.

1,073,586, Patented Sept. 23, 1913.

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GLASS BTGHING MACHINE.

APPLICATION HLBD 1130.23, 1912.

1,073,586, Patented Sept.23,1913

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E. BELL.

GLASS ETCHING MACHINE.

APPLICATION FILED 1120.23, 1912,

1,073,586. Patented Sept.23,1913.

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E. BELL. GLASS ETGHING MACHINE. APPLIOATION FILED DBO. za. 1912.

1,073,586. Patented sept. 23, 1913.

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i Il l l O Q Q 'N \D N o I L i .ff i Y l x f if L WITNESSES www n www @Uil tnvrrnn straansrarnnr ernten ELT/IER BELL, OF MOUNT PLEASANT, PENNSYLVANIA, ASSIGNOR TO BRYCE BROTHERS COMPANY, OF MOUNT PLEASANT, PENNSYLVANIA, A CORPORATION OF PENNSYL- VANIA.

GLASS-ETCHING MACHINE.

Specification of Letters Patent.

Patented Sept. 23, 11913.

To @ZZ 107mm 'it may concern:

lle it known that l, Emma Bunn, a citizen et the `United States, and resident oit lvlount Pleasant, Vestmoreland county, Pennsylvania, have invented a new and usetul llmprovement in Glass-Etching Machines, oit which the :following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part ot this specification, in which Figure l a plan view oit a machine elnbodying my invention; Fig. 2 is a side elevation of the same; Figs. 3 and Lit are sections on the lines lll-lll and lV-lV respectively oit Fig. l; Fig. 5 is a plan view oit' a portion ol the machine on a larger scale; Fig, t3 is a detail sectional view ol one et the etching needles; Fig. 7 is a perspective view o one ot the cam devices; and Fig. 8 is a detail view of a portion oit the machine hereinafter more fully described.

My invention has relation to glass etching machines, and is designed to provide a machine of this class which can be easily operated, which is simple in its construction and adjustment, and by means oit` which various designs can be accurately etched upon the articles.

My invention relates more particularly to a multiple machine, in which the same pattern is simultaneously etched upon a plu `ality of objects.

ln general, it consists oi' a pantographie device having a tracing point adapted to jtfollow the outlines o't a pattern and capable of a universal movement. The two components of these movements in directions at right angles to each other are transmitted respectively to the article supports, and to the etching needles. The machine also comprises novel means for transmitting these movements to the article supports and to the needles; and also a novel arrangement of the pantogralvihic apparatus, and o't` the needles and needle-holding arrangements.

The entire machine further embodies novel features whereby lost motion is eliminated and the moving parts are so balanced as to be easily and freely olieraled.

Referring to the accomlfianying drawing.' the numeral 2 designates the supporting :trame et' the machine, which may be, in general, ot any suitable character for the purpose. This machine is provided at one end portion with suitable supporting brackets and clamps 2:3 t'or the pattern plate ft, which carries the design to be reproduced upon the glass articles.

tflesignates a pantrgraph carriage, which is mounted for longitudnal movement upon the t'rame. As showin this mounting consists ot' a plurality oit ball bearing grooved wheels or rollers t5 on the carriage, and which are arranged to travel on tracks consisting of cylindrical rods 7.

8 designates a tracingl point or needle, which is mounted in a vertical sleeve 9 carried by an arm 1t), which overhangs the pattern plate in the manner best shown in Fig. 4t. ',lhe needle S is provided with a button or handle. 'lt at its upper end, and within the sleeve t) is provided with a spring l2 which normally tends to hold the needle in contact with the pattern plate. The arm l() is secured to a transversely movable bar 13, which is arranged to reciprfa-,ate on the carriage between the ball bearing anti'lrietion rollers lll.

The longitiulinal movement ot the carriage as a whole, combined with the transverse movement olf the bar 213, gives the tracing point or needle S capability of uni versal movement in :following the outlines o't the pattern,

l5 designates the etching l'ramc, which is shown as oi oblong rctangular 'tol-m, and upon which are mounted a plurality ot etching needles lt. Each o't' these needles is mounted loosely in a sleeve 17 (as best shown in detail in Fig. (3), said sleeve being capable of a vertical adjustment in an ul'nvardly projecting arm 18 ot the trame l5, the desired adjustment being fixed by means o'l the clamping bolt lt). ,llaeh sleeve 't'T is also capable of an angular adjustment, which is fixed by the clamping screw 20. Each needle is pressed inwardly with uniform pressure against the article to be etched by means ot a weighted lever 2l, which engages the rear end oit the needle shank, as best shown in Fig. G.

A portion ol the needles are mounted upon one oitE the side bars o't' the t'rame 11), and the remaining needles upon the opposite side bar, the two sets of needles being in staggered or alternating relation. rl`he 'trame l5 is capable of a vertically' reciprocating movement imparted to it by the vertical rod 22, which is connected to a central crossbar 15a in said frame, and which is guided at 23 in the main frame 2.

The transverse elements of the movements of the tracing needle are transmitted to the etching frame to pro-duce vertical movements thereof in the following manner: The bar 13 before described has secured thereto a laterally projecting arm 24, carrying a fork or jaw 25, which embraces a longitudinal rod 26 parallel to the longitudinal axis of the machine. This rod 26 is carried between the Vupper end portions of two levers 27, whose lower end portions are pivoted on a rod or shaft 28. This rod or shaft has an upwardly extending arm 29, to which is adjustably connected one end of a link 30. The other end of this link is adj ustably connected to a depending arm 31 of a rocker shaft 32. This rocker shaft extends along the machine to the opposite end thereof and has an arm 33 connected to the rod or plunger 22 by means of the yoke link 34 and the pins 35 and trunnions 35'. lt will be readily seen that the transvers-e movements ofthe bar 13 will oscillate the levers 27, thereby rocking the shaft 28, and through the connections described will produce corresponding vertical movements of the etching frame and its needles. These movements of the frame and needles can be made to bear any desired ratio to the transverse movements of the tracing needle 8 by varying the points of connection of the link 30 with the arms 29 and 31.

36 designate rotary article supports, which are arranged at each side of the etching frame in such a manner that one of the etching needles will project over each support. Each of these supports is carried on a vertical spindle 37, mounted in suitable bearings 38 carried by the frame 2, and having secured to its lower end a grooved pulley wheel 39.

40 is a flexible member, preferably a wire cord, which is connected at one end to a counterweight 41 at one side of the rear end of the machine, and which passes upwardly over a guide wheel 42, and thence forwardly, being' looped around the series of grooved pulleys 39 at one side of the machine. lft is then carried across to the opposite side of the machine and around a pulley 43 on a vertical shaft 44, and thence backwardly around the series of pulleys 39 at the opposite side of the machine, its other end portion passing' downwardly over the guide pulley 45 and being connected to a weight 46. The pulley 43 is fixed to the shaft 44 and is arranged to be driven from a pulley 47 on a vertical shaft 48 by a flexible cord or band 49. One end of this cord or band is connected to a weight 50, and passes up over a guide pulley 51, thence around a pulley 52 loosely mounted on the shaft 44, thence around the pulley 47, and then over a guide pulley 53 to a weight 54 which is attached to its o-pposite end. The pulley 52, which, as above stated, is loosely mounted on the shaft 44, is arranged to be connected with and disconnected from said shaft through the medium o-f a suitable clutch. One form of such clutch'is shown in detail in Fig. 8. lt consists of a clutch lever 55 pivoted at 56 to the upper squared end of the shaft 44, and having' a cam end 57, which, when the lever is moved from a horizontal to a vertical positio-n, is adapted to make a clutch contact with the upper face of the pulley 52. Normally, the lever 55 is in such position as to effect a clutch engagement with the pulley 52.

rlhe shaft 48, on which the pulley 47 is mounted as before des-cribed, also carries a pulley 58 iixed thereto. A flexible cord or band 59 passes around this pulley 58, one of its ends being' connected to the pantograph carriage at 60 and its other end passing downwardly over a guideY pulley 61 to a weight 62.

The connections means whereby the longitudinal movements of the tracing point or needle 8 are caused just described formv to effect corresponding' rotary movements of 95 the article supports 36. The longitudinal movements of the carriage oscillate the pulley 58 through the cord or band 59; and these movements are transmitted by the cord or band 49 to the pulley 52, thence to the pulley 43, and thence by the cord or band 40 to the series of pulleys 39 which are on the article -supporting spindles. The vario-us cords or bands are preferably composed of a steel wire of such a character that it will not stretch or vary in length.

63 designates a weighted balance connection for the table, this weight acting in opposition and balancing the action of the weight 62. The two weights 50 and 54 act as a mutual balance for each other, as do also the weights 41 and 46. It will be seen, therefore, that the movable parts to which these weights are connected are balanced in such a manner as to insure great freedom of motion with the expenditure of but little effort or power. To further insure the easy action of the machine, ball bearings are preferably provided wherever advisable.

For the purpose of simultaneously retracting the series ofA etching needles, I may provide means such as will now be described.

64 designates slotted cam or wedge members, one of which embraces the shank of each of the needles 16 between the end of its sleeve 17 and a collar 16a on the shank. (See Fig. 6.)` These several wedge or cam members are connected with each other as indicated at 65, and a cord or cable 66 extends from these connections 65 to a hand lever G7 pivoted to the main 'traine at G8 and having` a spring pawl 69 adapted to engage a rack bar 70. ,5y releasing;l the pawl tlf) and operating the lever (S7, the series ot wedges can all be drawn oiwvardly between the collars ttt and thc sleeves 17 to thereby retract the needles. it weighted counterbalance connection Tl can be, provided for operating' the cam or wedge members in the reverse direction to cause the needles to return to ope 'ative positions.

T2 designate the articles to be etched and 723 clan'ipine' means ot any Yusual or suitable character tor holding:r them to the snpports 3G..

rThe /operation readily understood oit the machine will be troni the foregoing.

The operator manipulates the tracing needle 8 to Ylfollow the outlines oit the pattern on the pattern plate 4l. 'lhe transverse niovenients oit the tracing,` needle are transmitted in the manner betere described to eilect vertical movements oit' the etchinii1 needles; while the longitudinal movements ot' the tiacing,` point are transmitted to the series ot article supports 3G to etl'ect corresponding; oscillatory movements thereof. Ordinarily, the pattern on plate 4t is not ot sutlicient length to extend entirely around the articles when reproduced thereon; and in some cases it may be desired to reproduce this pattern a number ot times upon the saine article so as to cause it to extend around the entire, or any desired portion, et the circ-,uintcrence thereo'i. This may be done by throwing the clutch lever 55 to the, position shown in Fig'. 8 and then moving' the pantogrraph carriage bach to its starting point. The disconnection ot the clutch lever will prevent backward rotation ot the article supports durin` the return. movement ot the carriage, so that. when the clutch lever 55 is again moved into clutching` position, and 'the tracingr movement ot the carriage is again. started, the pattern will be reproduced upon the articles as a continuation ot' the tirst reproduction.

',lhe advantages oit my invention will be apparent to those skilled in the art, since it provides a simple machine by which any desired pattern can be reproducial simullaneously iipou a plurality ot articles with great rapidity and accuracy. rlhe machine can be readily adjusted 'tor various sizes and shapes ot articles.

lVhile in the machine shown there are six article supports and a corresponding number ot etching' needles, it will be readily understood that the ni'm'iber ol" supports or needles can be very considerably increased without in any way departing from the principles of my invention.

It will also be obvious that various other changes can be made in the details ot construction and arrangement ot the several parts without departing` from the spirit and scope oit my invention as defined in the appended claims.

What l claim isti. An etchingI machine having' an article support rotatable about a vertical axis, a vertically movable etching needle, and a universally movable tracing,l carriage, together with connections between said carriage and the article support and needle whereby one set ot movements ot the carriage c'tl'ect a vertical movement o'l the needle and .the other set oli movements ot the carriage e'tlect a rotary movementI ot the article support; substantially as described.

i2. An etchingl machine havingI a rotary article support, and a vertically movable etchingv needle, said support and needle being at one end portion o'l'i the machine, a pantogralih carriage mounted :tor movement in one direction on the machine at the opposite end portion thereof, a tracing needle mounted on said carriage and capable oit an independent movement in a direction at substantially right angles to the movement otl the carriage, and connections Ytor transmitting these respective n'ioven'ients to the etching needle and the article support; substantially as described.

3. An etching machine comprising a plu- `ality ot rotary article supports arranged in two opposite sets, an etching :trame movable vertically between the two sets of supports and having' a plurality ot etching` needles, a universally movable tracing point, and connections operated by the movements ot si id point for etl'ecting proportional movements ol the etching :trame and the series ot article supports; substantially as described.

Lt. An etching machine coniprisinftrl a plu- 'ality oit rotatabl article supports arranged in two opposite sets, an etching trame movable vertically between two sets ot supports and carrying a plurality ot' etching needles, a tracing point, and connections whereby the movements of said point in one direction etl'ect proportional movements oit the etching traine and needles, and other coi'inections whereby the movements of the tracing point 'in another direction eti'ect proportional movements o'l the article supports; substantially as described.

5. i\n etching' machine comprising a longitudinally movable carriage, a tracing); point capable ol independent, transverse n'ioven'ient on said carriage, a movable etching' tool, a movable article support, and connections whereby the longitudinal and transverse movenients ot the, carriage and tracing point eii'cct, proportional movements ol" the etching tool and article support, together with means :l'or counterbalancing the movements of the carriage and tracing point, substantially as described.

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6. An etching machine comprising a lon-v gitudinally movable carriage, a tracing point mounted for movement with said carriage, and also for independent transverse movement thereon, and opposing counterweights connected to said carriage; substantially as described.

7. An etching machine comprising a series of rotatable article supports having pulleys, and a flexible cord looped around all of said pulleys and having a Vweight at each of its ends; substantially as described.

8. An etching machine comprising a. rotatable article support; a flexible driving member for said support, balancing means attached to the flexible driving member, a movable pantograph carriage, and actuating connections between said carriage and the driving member for the article support whereby certain movements of the carriage are transmitted to said support; substantially as described.

9. An etching machine having a rotatable article support, a vertically movable tool carrier adjacent to said support, a movable pantograph carriage, counterbalancing means for said carriage, connections between the carriage and the tool carrier whereby certain movements of the carriage effect vertical movements of the toel carrier, and other connections between the carriage and the article support whereby other movements of the carriage effect a rotary movement of said support; substantially as described. v

10. An etching machine comprising a plu- -rality of article Supports, a flexible driving' member for said supports, and balancing means attached to said driving member; substantially as described.

11. An etching machine comprising a plurality of rotary article supports, having pulleys, a flexible member passing around all of said pulleys and having a weightat each of its ends, a driving pulley around which said flexible member also passes, a movable pantograph carriage, and an actuating connection between said carriage and the driving pulley; substantially as described.

12. An etching machine comprising' a plurality of rotary article supports, having 'pulleys, a flexible member passing around all of said pulleys and having a weight at each of its ends, a driving pulley around which said flexible member also passes, a movable pantograph carriage, and an actuating connection between said carriage and the driving pulley, said actuating connection including a clutch member; substantially as described.

13. An etching machine comprising a plurality of rotary article supports having pulleys, a flexible member passing around all of said pulleys and having a weight connected to each of its ends, a driving pulley around which said member also passes, a movable pantograph carriage, :mother pulley, a flexible member connected to the carriage and passing around the last named pulley, a weight attached to the end of the last named flexible connection, a pulley connected to the driving pulley, a pulley connected to the second named pulley, and a flexible member passing around the third and fourth pulleys and having a weight at each'end; substantially as described.

14. An etching machine comprising a plurality of rotary article supports having pulleys, a flexible member passing around all of said pulleys and having a weight connected to each of its ends, a driving pulley around which said member also passes, a movable pantograph carriage, another pulley, a ilexible member connected to the carriage and passingv around the last named pulley, a weight attached to the end of the last named flexible ccnnection, aV pulley connected to the driving pulley, a pulley connected to the second named pulley, anda flexible member passing around the third and fourth pulleys and having a weight at each end, and there being a clutch connection between the driving pulley and the pulley to which it is con-y nected; substantially as described-` 15. An etching machine comprising a plurality of rotatable article supports arranged in two series at opposite sides of the center y of the machine, a vertically movableetching frame arranged between the two series of article supports and carrying a plurality of etching tools, a pantograph carriage having a tracing point, and actuating connections between said carriage and the article supports and the etching frame; substantially as described.

1S. ln an etching machine, a vertically movable etching frame having a plurality of etching tools mounted thereon, a wedge device engaging each tool for effecting a retraction thereof, and a common actuatin connection attached to all of the wedge devices and whereby the tools may be simultaneously retracted; substantially as described.

17. ln an etching machine, a verticallyV movable etching frame having a plurality of etching tools mounted thereon, a wedge device engaging each tool for effecting a retraction thereof, and a commen ,actuating connection attached to all of the wedge devices and whereby the tools may be simultaneously retracted, together with means for advancing the tools when the wedge devices are moved in the reverse direction; substantially as described.

18. An etching machine comprising a universally movable tracing carriage, a tracing point mounted thereon, said carriage having' a fork device, a rocker shaft having an arm engaged by the fork device, another rocker lll) Copies of this patent may be obtained for Q0. An etchingmachine having a tool carrier provided with a sleeve, an etching i5 tool slidably mounted in the sleeve, and a weighted lever engaging' the shank of said tool for holdingl the tool te its Work; sub stantially as described.

In testimony whereof, I have hereunto set my hand.

ELME R BELL.

lVitnesses:

J. LLOYD KALr, K. M. KAL?.

five cents each, by addressing the Commissioner of Patents Washington, D. C. 

